Why pay $10-40/month for video analysis? DualTube handles side-by-side sports form comparison with A-B loop, slow motion, and offset alignment — for free.
Try it now
Open DualTube→Record your form on a phone. Upload to YouTube as unlisted — only the link holder can view it. Free, 60 seconds, private.
Slow-mo PGA swings, ATP serves, MLB pitches — all free. Find a matching angle (face-on or down-the-line) and load it on the left.
Use the offset slider to make both videos hit the impact moment at the same timeline position. 0.1s is enough for frame-accurate comparison at 0.25x speed.
A-B loop the portions you want to study. Common ones: address to top, top to impact, impact to finish.
Film your technique with any phone. Landscape, tripod if possible.
Sign in and upload with visibility set to Unlisted.
Search YouTube for slow-motion pro footage at matching angle.
Pro left, you right. Adjust offset to align impact.
A-B the section, drop to 0.25x.
Golf, tennis, baseball, martial arts, swimming, diving, gymnastics, weightlifting — any sport where body position determines outcome.
Not directly. For overlay annotations, pair with a screen annotation tool or screenshot then edit.
For side-by-side playback with slow-mo and loop, yes. For AI-driven posture detection and drawing tools, paid apps still lead.